On August 28, 2017, Nintendo Co., Ltd. filed in the US via the United States Patent and Trademark Office a patent application for an INFORMATION PROCESSING SYSTEM, EXTENDED INPUT SYSTEM, AND INFORMATION PROCESSING METHOD. This patent concerns extended input devices for use with Nintendo Switch. Examples are Donkey Konga drums and a keyboard. Inventor is Hitoshi Yamazaki who has seventeen other patents with Nintendo (some together with Shigeru Miyamoto). Below is abstract, selected excerpts and of course drawings. Drawings DETAILED DESCRIPTION OF NON-LIMITING EXAMPLE EMBODIMENTS Source: Search application number 15/687771 at http://appft.uspto.gov/netahtml/PTO/search-bool.html As always, a patent is not proof of a future product or service.